Finally playing Minecraft ...
Minecraft takes a huge toll on your computer. Its crazy
Mostly CPU. Better graphics card if you want to run HD.
gfx card needs to support openGL
Since most of the answers to this thread are incorrect and based on opinion rather than facat, here is what I will say about Minecraft and its performance.
Minecraft is mostly GPU reliant, and does not require much RAM! Minecraft's start parameters are -Xmx1024m and -Xms512m which means that Minecraft is started with an initial heap size of 512MB, which expands up to 1024MB when required. This means the maximum amount of RAM Minecraft can use is 1GB.
The game is also heavily reliant on your graphics card rendering capability. If your graphics card has 2GB of RAM, but has a terrible rending ability, then you will so no difference in framerate than a computer with rendering capability. Intel HD Graphics 3000 and below fit in the "terrible rendering cards" category.
To the people that are using Intel HD Graphics, that is a terrible card for Minecraft. It has almost no rendering ability, unless you're using an Ivy Bridge CPU with Intel HD Graphics 4000. Otherwise an ATI or NVIDIA card is optimal. If you see random lines everywhere, then you're using the wrong libraries for rendering the game. Update your drivers.
In other words, the graphics card makes the biggest difference when playing Minecraft.
Minecraft is mostly GPU reliant, and does not require much RAM! Minecraft's start parameters are -Xmx1024m and -Xms512m which means that Minecraft is started with an initial heap size of 512MB, which expands up to 1024MB when required. This means the maximum amount of RAM Minecraft can use is 1GB.
The game is also heavily reliant on your graphics card rendering capability. If your graphics card has 2GB of RAM, but has a terrible rending ability, then you will so no difference in framerate than a computer with rendering capability. Intel HD Graphics 3000 and below fit in the "terrible rendering cards" category.
To the people that are using Intel HD Graphics, that is a terrible card for Minecraft. It has almost no rendering ability, unless you're using an Ivy Bridge CPU with Intel HD Graphics 4000. Otherwise an ATI or NVIDIA card is optimal. If you see random lines everywhere, then you're using the wrong libraries for rendering the game. Update your drivers.
In other words, the graphics card makes the biggest difference when playing Minecraft.

